State police are investigating the death of an East Northport man in a crash involving an off-road vehicle.                          

Police say Jeff Kuhn was a passenger in the vehicle when it suddenly swerved off the road and hit a tree in Durham, located in upstate New York.

State police say Scott Colleran, of Lindenhurst, was operating the off-road vehicle Saturday.

Colleran and a passenger were treated for injuries.

Police say the investigation is ongoing.